Inside each of the Serio speakers is a single 80mm LD 80 Atohm mid/bass drive unit, which covers a frequency range of 180Hz to 20kHz – anything below that is obviously passed over to the HFM sub. Waterfall recommends using an amp output power of 30 to 80W.
Also incorporated into the speaker is Waterfall’s patented Heatstream technology, which allows the compact drive unit to handle greater power than it otherwise would have. The voice coil is coupled to the aluminium body, which means the compact Atohm driver can dissipate enough heat to handle the high power demands of home cinema soundtracks.
The HFM subwoofer is a fairly compact unit itself, but packs a punch with its three Class D amplifiers, two of which offer 60W for the satellites and the other pumping out 120W through its own 7in bass driver. Setting up the system is a piece of cake. There are two ways you can do it – if using the system with a desktop PC or another device, you can connect it to the 3.5mm input on the back of the sub, and connect the satellites to its binding posts. But you can also connect the sub and satellites directly to your AV receiver for home cinema use.
Also on the back of the compact sub are two volume dials labelled Volume and Sub Level, the former is supposed to control volume when used as a self-contained system, the other when connected to your amp. On the back of the satellites the speaker cables connect to small spring-loaded terminals, which are fairly fiddly to rig up. Two grooves run up towards the top of the speaker, which helps hide the wires when using the stands.